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1.29 bentley 16: <h2 id=OpenBSD>
1.1 deraadt 17: <a href="index.html">
1.29 bentley 18: <i>Open</i><b>BSD</b></a>
19: 6.2 Errata
1.1 deraadt 20: </h2>
21: <hr>
22:
23: For errata on a certain release, click below:<br>
1.31 schwarze 24: <a href="errata20.html">2.0</a>,
1.1 deraadt 25: <a href="errata21.html">2.1</a>,
26: <a href="errata22.html">2.2</a>,
27: <a href="errata23.html">2.3</a>,
28: <a href="errata24.html">2.4</a>,
29: <a href="errata25.html">2.5</a>,
30: <a href="errata26.html">2.6</a>,
31: <a href="errata27.html">2.7</a>,
32: <a href="errata28.html">2.8</a>,
33: <a href="errata29.html">2.9</a>,
34: <a href="errata30.html">3.0</a>,
35: <a href="errata31.html">3.1</a>,
36: <a href="errata32.html">3.2</a>,
37: <a href="errata33.html">3.3</a>,
38: <a href="errata34.html">3.4</a>,
39: <a href="errata35.html">3.5</a>,
1.31 schwarze 40: <br>
1.1 deraadt 41: <a href="errata36.html">3.6</a>,
42: <a href="errata37.html">3.7</a>,
43: <a href="errata38.html">3.8</a>,
44: <a href="errata39.html">3.9</a>,
45: <a href="errata40.html">4.0</a>,
46: <a href="errata41.html">4.1</a>,
47: <a href="errata42.html">4.2</a>,
48: <a href="errata43.html">4.3</a>,
49: <a href="errata44.html">4.4</a>,
50: <a href="errata45.html">4.5</a>,
51: <a href="errata46.html">4.6</a>,
52: <a href="errata47.html">4.7</a>,
53: <a href="errata48.html">4.8</a>,
54: <a href="errata49.html">4.9</a>,
55: <a href="errata50.html">5.0</a>,
56: <a href="errata51.html">5.1</a>,
1.31 schwarze 57: <br>
1.1 deraadt 58: <a href="errata52.html">5.2</a>,
59: <a href="errata53.html">5.3</a>,
60: <a href="errata54.html">5.4</a>,
61: <a href="errata55.html">5.5</a>,
62: <a href="errata56.html">5.6</a>,
63: <a href="errata57.html">5.7</a>,
64: <a href="errata58.html">5.8</a>,
65: <a href="errata59.html">5.9</a>,
66: <a href="errata60.html">6.0</a>,
1.11 deraadt 67: <a href="errata61.html">6.1</a>,
1.26 deraadt 68: <a href="errata63.html">6.3</a>,
1.28 deraadt 69: <a href="errata64.html">6.4</a>,
1.30 deraadt 70: <a href="errata65.html">6.5</a>,
1.32 deraadt 71: <a href="errata66.html">6.6</a>,
1.33 deraadt 72: <a href="errata67.html">6.7</a>,
1.34 deraadt 73: <a href="errata68.html">6.8</a>,
1.35 ! tj 74: <br>
1.34 deraadt 75: <a href="errata69.html">6.9</a>.
1.1 deraadt 76: <hr>
77:
78: <p>
79: Patches for the OpenBSD base system are distributed as unified diffs.
80: Each patch is cryptographically signed with the
81: <a href="https://man.openbsd.org/OpenBSD-6.2/signify.1">signify(1)</a> tool and contains
82: usage instructions.
83: All the following patches are also available in one
84: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2.tar.gz">tar.gz file</a>
85: for convenience.
86:
87: <p>
88: Alternatively, the <a href="https://man.openbsd.org/syspatch">syspatch(8)</a>
89: utility can be used to apply binary updates on the following architectures:
1.3 tj 90: amd64, i386, arm64.
1.1 deraadt 91:
92: <p>
93: Patches for supported releases are also incorporated into the
1.27 tj 94: <a href="stable.html">-stable branch</a>.
1.1 deraadt 95:
96: <hr>
97:
98: <ul>
99:
1.2 bluhm 100: <li id="p001_tcb_invalid">
1.29 bentley 101: <strong>001: RELIABILITY FIX: October 13, 2017</strong>
1.2 bluhm 102: <i>amd64</i>
103: <br>
104: A local user could trigger a kernel panic by using an invalid TCB value.
105: <br>
106: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/001_tcb_invalid.patch.sig">
1.3 tj 107: A source code patch exists which remedies this problem.</a>
108: <p>
109:
110: <li id="p002_fktrace">
1.29 bentley 111: <strong>002: SECURITY FIX: December 1, 2017</strong>
1.3 tj 112: <i>All architectures</i>
113: <br>
114: The fktrace(2) system call had insufficient security checks.
115: <br>
116: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/002_fktrace.patch.sig">
1.2 bluhm 117: A source code patch exists which remedies this problem.</a>
118: <p>
1.1 deraadt 119:
1.4 tj 120: <li id="p003_mpls">
1.29 bentley 121: <strong>003: RELIABILITY FIX: December 10, 2017</strong>
1.4 tj 122: <i>All architectures</i>
123: <br>
124: A number of bugs were discovered in the MPLS stack that can be used to
125: remotely trigger kernel crashes.
126: <br>
127: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/003_mpls.patch.sig">
128: A source code patch exists which remedies this problem.</a>
129: <p>
130:
1.5 tj 131: <li id="p004_libssl">
1.29 bentley 132: <strong>004: RELIABILITY FIX: January 14, 2018</strong>
1.5 tj 133: <i>All architectures</i>
134: <br>
135: An incorrect TLS extensions block is generated when no extensions are present,
136: which can result in handshake failures.
137: <br>
138: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/004_libssl.patch.sig">
139: A source code patch exists which remedies this problem.</a>
140: <p>
141:
1.6 tj 142: <li id="p005_ahopts">
1.29 bentley 143: <strong>005: RELIABILITY FIX: February 2, 2018</strong>
1.6 tj 144: <i>All architectures</i>
145: <br>
146: Specially crafted IPsec AH packets with IP options or IPv6 extension
147: headers could crash or hang the kernel.
148: <br>
149: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/005_ahopts.patch.sig">
150: A source code patch exists which remedies this problem.</a>
151: <p>
152:
153: <li id="p006_prevhdr">
1.29 bentley 154: <strong>006: RELIABILITY FIX: February 2, 2018</strong>
1.6 tj 155: <i>All architectures</i>
156: <br>
157: Processing IPv6 fragments could incorrectly access memory of an mbuf
158: chain that is not within an mbuf. This may crash the kernel.
159: <br>
160: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/006_prevhdr.patch.sig">
161: A source code patch exists which remedies this problem.</a>
162: <p>
163:
164: <li id="p007_etherip">
1.29 bentley 165: <strong>007: SECURITY FIX: February 2, 2018</strong>
1.6 tj 166: <i>All architectures</i>
167: <br>
168: If the EtherIP tunnel protocol was disabled, IPv6 packets were not
169: discarded properly. This causes a double free in the kernel.
170: <br>
171: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/007_etherip.patch.sig">
172: A source code patch exists which remedies this problem.</a>
173: <p>
174:
1.7 tj 175: <li id="p008_unbound">
1.29 bentley 176: <strong>008: SECURITY FIX: February 8, 2018</strong>
1.7 tj 177: <i>All architectures</i>
178: <br>
179: A flaw was found in the way unbound validated wildcard-synthesized
180: NSEC records. An improperly validated wildcard NSEC record could be
181: used to prove the non-existence (NXDOMAIN answer) of an existing
182: wildcard record, or trick unbound into accepting a NODATA proof.
183: <br>
184: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/008_unbound.patch.sig">
185: A source code patch exists which remedies this problem.</a>
186: <p>
187:
1.9 tj 188: <li id="p009_meltdown">
1.29 bentley 189: <strong>009: SECURITY FIX: March 1, 2018</strong>
1.9 tj 190: <i>amd64</i>
191: <br>
192: Intel CPUs contain a speculative execution flaw called Meltdown which
193: allows userspace programs to access kernel memory.
194: <br>
195: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/009_meltdown.patch.sig">
196: A complex workaround solves this problem.</a>
197: <p>
198:
1.10 tj 199: <li id="p010_ahauth">
1.29 bentley 200: <strong>010: RELIABILITY FIX: March 20, 2018</strong>
1.10 tj 201: <i>All architectures</i>
202: <br>
203: The IPsec AH header could be longer than the network packet, resulting in
204: a kernel crash.
205: <br>
206: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/010_ahauth.patch.sig">
207: A source code patch exists which remedies this problem.</a>
208: <p>
209:
1.12 afresh1 210: <li id="p011_perl">
1.29 bentley 211: <strong>011: SECURITY FIX: April 14, 2018</strong>
1.12 afresh1 212: <i>All architectures</i>
213: <br>
214: Heap overflows exist in perl which can lead to segmentation faults,
215: crashes, and reading memory past the buffer.
216: <br>
217: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/011_perl.patch.sig">
218: A source code patch exists which remedies this problem.</a>
219: <p>
220:
1.13 tj 221: <li id="p012_httpd">
1.29 bentley 222: <strong>012: RELIABILITY FIX: April 21, 2018</strong>
1.13 tj 223: <i>All architectures</i>
224: <br>
225: httpd can leak file descriptors when servicing range requests.
226: <br>
227: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/012_httpd.patch.sig">
228: A source code patch exists which remedies this problem.</a>
229: <p>
230:
1.14 tj 231: <li id="p013_ipseclen">
1.29 bentley 232: <strong>013: RELIABILITY FIX: May 8, 2018</strong>
1.14 tj 233: <i>All architectures</i>
234: <br>
235: Incorrect handling of fragmented IPsec packets could result in a system crash.
236: <br>
237: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/013_ipseclen.patch.sig">
238: A source code patch exists which remedies this problem.</a>
239: <p>
240:
1.15 tj 241: <li id="p014_ipsecout">
1.29 bentley 242: <strong>014: RELIABILITY FIX: May 17, 2018</strong>
1.15 tj 243: <i>All architectures</i>
244: <br>
245: A malicious packet can cause a kernel crash when using IPsec over IPv6.
246: <br>
247: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/014_ipsecout.patch.sig">
248: A source code patch exists which remedies this problem.</a>
249: <p>
250:
1.16 tb 251: <li id="p015_libcrypto">
1.29 bentley 252: <strong>015: SECURITY FIX: June 14, 2018</strong>
1.16 tb 253: <i>All architectures</i>
254: <br>
255: DSA and ECDSA signature generation can potentially leak secret information
256: to a timing side-channel attack.
257: <br>
258: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/015_libcrypto.patch.sig">
259: A source code patch exists which remedies this problem.</a>
260: <p>
261:
1.17 afresh1 262: <li id="p016_perl">
1.29 bentley 263: <strong>016: SECURITY FIX: June 21, 2018</strong>
1.17 afresh1 264: <i>All architectures</i>
265: <br>
266: Perl's Archive::Tar module could be made to write files outside of
267: its working directory.
268: <br>
269: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/016_perl.patch.sig">
270: A source code patch exists which remedies this problem.</a>
271: <p>
272:
1.18 tj 273: <li id="p017_intelfpu">
1.29 bentley 274: <strong>017: SECURITY FIX: June 21, 2018</strong>
1.18 tj 275: <i>amd64</i>
276: <br>
277: Intel CPUs speculatively access FPU registers even when the FPU is disabled,
278: so data (including AES keys) from previous contexts could be discovered
279: if using the lazy-save approach.
280: <br>
281: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/017_intelfpu.patch.sig">
282: A source code patch exists which remedies this problem.</a>
283: <p>
284:
1.19 tj 285: <li id="p018_execsize">
1.29 bentley 286: <strong>018: RELIABILITY FIX: July 25, 2018</strong>
1.19 tj 287: <i>All architectures</i>
288: <br>
289: A regular user could trigger a kernel panic by executing an invalid
290: ELF binary.
291: <br>
292: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/018_execsize.patch.sig">
293: A source code patch exists which remedies this problem.</a>
294: <p>
295:
1.20 tj 296: <li id="p019_amdlfence">
1.29 bentley 297: <strong>019: SECURITY FIX: July 31, 2018</strong>
1.20 tj 298: <i>amd64 and i386</i>
299: <br>
300: On AMD CPUs, set a chicken bit which turns LFENCE into a serialization
301: instruction against speculation.
302: <br>
303: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/019_amdlfence.patch.sig">
304: A source code patch exists which remedies this problem.</a>
305: <p>
306:
307: <li id="p020_ioport">
1.29 bentley 308: <strong>020: SECURITY FIX: July 31, 2018</strong>
1.20 tj 309: <i>i386</i>
310: <br>
311: IO port permissions were incorrectly restricted.
312: <br>
313: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/020_ioport.patch.sig">
314: A source code patch exists which remedies this problem.</a>
315: <p>
316:
1.21 tj 317: <li id="p021_fpuinit">
1.29 bentley 318: <strong>021: RELIABILITY FIX: August 4, 2018</strong>
1.21 tj 319: <i>amd64</i>
320: <br>
321: Incorrect initialization of the FPU caused floating point exceptions
322: when running on Xen.
323: <br>
324: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/021_fpuinit.patch.sig">
325: A source code patch exists which remedies this problem.</a>
326: <p>
327:
1.24 tj 328: <li id="p022_fpufork">
1.29 bentley 329: <strong>022: SECURITY FIX: August 24, 2018</strong>
1.24 tj 330: <i>amd64</i>
331: <br>
332: State from the FPU of one userland process could be exposed to other processes.
333: <br>
334: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/022_fpufork.patch.sig">
335: A source code patch exists which remedies this problem.</a>
336: <p>
337:
338: <li id="p023_vmml1tf">
1.29 bentley 339: <strong>023: SECURITY FIX: August 24, 2018</strong>
1.24 tj 340: <i>amd64</i>
341: <br>
342: The Intel L1TF bug allows a vmm guest to read host memory.
343: Install the CPU firmware using fw_update(1), and apply this workaround.
344: <br>
345: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/023_vmml1tf.patch.sig">
346: A source code patch exists which remedies this problem.</a>
347: <p>
348:
1.25 tj 349: <li id="p024_ldtr">
1.29 bentley 350: <strong>024: SECURITY FIX: September 21, 2018</strong>
1.25 tj 351: <i>amd64</i>
352: <br>
353: On AMD CPUs, LDTR must be managed crossing between VMs.
354: <br>
355: <a href="https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/024_ldtr.patch.sig">
356: A source code patch exists which remedies this problem.</a>
357: <p>
358:
1.1 deraadt 359: </ul>
360:
361: <hr>